Commercial roofing products referred to as solid sheet membrane are also called a Solid Roll roofing product, and also called a Catalogue Roofing product. They can also be titled Roll Roofing or Roofing Sheets, and the same goes for other solid sheet membranes such as flat roofs and self adhered membranes like Kool Seal.
For some products, there will not be any pictures or graphics(i.e., for rolls). These are commonly referred to as "sterile" products and can be quite lucrative if you have the right contacts in the commercial roofing industry.
A product may not specifically state it is a solid roll, it can be said that the material is used for large flat roofs (such as cell phone towers) with lots of surface area. The product will often be called out by its brand name (usually shingles or tiles), but could just say 'roofing'. If you cannot find a manufacturer's website, try calling up one of their distributor websites to see if they sell any roll roofing products for large flat surfaces that must resist fire, water or wind damage.
The different solid sheet membrane products are used primarily on commercial roofing maintenance
projects. These roofs will perform very well in climates that experience cold winters such as U-values of .19 or less. In colder climates, they may be used under a waterproofing system as a secondary barrier to protect the waterproofing from ice damage during the winter months. They are also more cost effective, easier to install than open-joint systems and offer protection against leaks due to punctures and impact, installation over shingle roofs, installation over metal roofs and have a service life of about 15 years